Health and safety law in relation to self-employed people is changing. From 1 October 2015, if people are self-employed and their work activity poses no potential risk to the health and safety of other workers or members of the public, then health and safety law will not apply to them.
However, the law also states that there are certain work activities where the law applies because they are high risk. If the work involves any of these activities, then the law will continue to apply:
HSE have produced guidance on this: Self-employed.